The future of GNOME - an interesting subject. GNOME 3 has been out and about for a while, and it hasn't exactly been a smashing success. One of the efforts to take GNOME to the next level is what the team refers to as GNOME OS - but in reality, it's a set of improvements to GNOME that are just as interesting to GNOME-the-desktop-environment.

It may just be me, but the last two desktop machines I built for myself had RAM problems. The last one was pretty sneaky because it was able to complete a full Windows installation without an error. It was some problem with triple-channel configuration because each stick tested perfectly fine by itself.

You might also have a heat problem. Perhaps the CPU, the video card or maybe some other motherboard chip.

Speaking of video cards, you can end up getting a bad one. It does happen sometimes that a card may have a defective processor, bad RAM or a badly installed heatsink. Or if it's a gaming card, it may be overclocked beyond what it can really handle.